docs: def get_currency(self, code):
          """
          Helper function
          Returns a dict containing:
          shortname (the code)
          longname
          users - a comma separated list of countries/regions/cities that use it
          alternatives - alternative names, e.g. ewro, Quid, Buck
          symbol - e.g. £, $
          highlight - ?
          """
          for currency in self.currencies:
              if currency['shortname'] == code:
                  return currency
          raise RuntimeError("%s: %s not found" % (self.name, code))